Is there a general rule for finding ?
For all I know:
But after that, it just gets tedious!
the exponent rules ussually just use as default
as you mention probably doesn't relate to much here
but in certain other expressions it would
what you are doing is correct...
it can just get very busy....
on the TI89 use the expand((a+b)^4) and its done
calculus has some better ways to deal with this.
aloha and have nice weekend